Chemical Elements In Group 2

4BeBeryllium9.0122Period: 2Melting Point: 1278Boling Point: 2970 Ionization Energy: 9,3227Electrone Gativity: 1,57Covalenz Radius: 89Discovery Year: 1797Inventor: Ramsay, Sir William & Strutt, John
22
12MgMagnesium24.305Period: 3Melting Point: 639Boling Point: 1090 Ionization Energy: 7,6462Electrone Gativity: 1,31Covalenz Radius: 136Discovery Year: 1755Earth Crust: 2,08Human Body: 0,05Inventor: Ramsay, Sir William & Strutt, John
282
20CaCalcium40.078Period: 4Melting Point: 839Boling Point: 1484 Ionization Energy: 6,1132Electrone Gativity: 1,36Covalenz Radius: 174Discovery Year: 1879Earth Crust: 3,65Human Body: 1,5Inventor: Ramsay, Sir William & Strutt, John
2882
38SrStrontium87.62Period: 5Melting Point: 769Boling Point: 1384 Ionization Energy: 5,6949Electrone Gativity: 0,82Covalenz Radius: 192Discovery Year: 1790Human Body: minimum tracesInventor: Ramsay, Sir William & Strutt, John
281882
56BaBarium137.33Period: 6Melting Point: 725Boling Point: 1140 Ionization Energy: 5,2117Electrone Gativity: 2,6Covalenz Radius: 198Discovery Year: 1808Earth Crust: 0,05Inventor: Ramsay, Sir William & Strutt, John
28181882
88RaRadium(226)Period: 7Melting Point: 700Boling Point: 1737 Ionization Energy: 5,2784Discovery Year: 1898Inventor: Ramsay, Sir William & Strutt, John
2818321882

Heat change





Note

Melting point
Boiling point